Q&A DeForest & Tummala-Narra / Immigration and Nationality Act of 1965 / This month marks the 49th anniversary of the enactment of American legislation that opened up immigration to large numbers of Latin Americans, Asians and Africans. The Hart-Celler Act-also known as the Immigration and Nationality Act of 1965-abolished a discriminatory quota system that had been in place since the 1920's. VOA's Dave DeForest spoke with Boston College Psychology professor Usha Immigration and Nationality (OOSHA / tah-mall-uh-NAHR-uh) about the importance of the law.